/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:00:08,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:00:08,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:00:08,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:00:08,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:00:08,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:00:08,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:00:08,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:00:08,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:00:08,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:00:08,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:00:08,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:00:08,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:00:08,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:00:08,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:00:08,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:00:08,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:00:08,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:00:08,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:00:08,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:00:08,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:00:08,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:00:08,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:00:08,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:00:08,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:00:08,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:00:08,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:00:08,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:00:08,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:00:08,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:00:08,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:00:08,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:00:08,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:00:08,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:00:08,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:00:08,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:00:08,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:00:08,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:00:08,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:00:08,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:00:08,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:00:08,752 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 14:00:08,791 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:00:08,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:00:08,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:00:08,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:00:08,793 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:00:08,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:00:08,794 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:00:08,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:00:08,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:00:08,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:00:08,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:00:08,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:00:08,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:00:08,796 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:00:08,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:00:08,796 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:00:08,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:00:08,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:00:08,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:00:08,798 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:00:08,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:00:08,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:00:08,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:00:08,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:00:08,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:00:08,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:00:08,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:00:08,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:00:08,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:00:08,800 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:00:09,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:00:09,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:00:09,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:00:09,212 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:00:09,213 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:00:09,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-29 14:00:09,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97ebbecf3/b412b704e6c34a608dcfda3df3991f0f/FLAG45c16fd48 [2020-10-29 14:00:10,011 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:00:10,012 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-29 14:00:10,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97ebbecf3/b412b704e6c34a608dcfda3df3991f0f/FLAG45c16fd48 [2020-10-29 14:00:10,195 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97ebbecf3/b412b704e6c34a608dcfda3df3991f0f [2020-10-29 14:00:10,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:00:10,210 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:00:10,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:00:10,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:00:10,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:00:10,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:00:10" (1/1) ... [2020-10-29 14:00:10,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bbb1536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:00:10, skipping insertion in model container [2020-10-29 14:00:10,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:00:10" (1/1) ... [2020-10-29 14:00:10,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:00:10,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:00:11,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:00:11,113 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:00:11,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:00:11,577 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:00:11,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:00:11 WrapperNode [2020-10-29 14:00:11,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:00:11,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:00:11,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:00:11,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:00:11,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:00:11" (1/1) ... [2020-10-29 14:00:11,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:00:11" (1/1) ... [2020-10-29 14:00:11,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:00:11" (1/1) ... [2020-10-29 14:00:11,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:00:11" (1/1) ... [2020-10-29 14:00:11,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:00:11" (1/1) ... [2020-10-29 14:00:11,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:00:11" (1/1) ... [2020-10-29 14:00:11,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:00:11" (1/1) ... [2020-10-29 14:00:11,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:00:11,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:00:11,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:00:11,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:00:11,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:00:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:00:11,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:00:11,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:00:11,789 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:00:11,789 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:00:11,789 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:00:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:00:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:00:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:00:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:00:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 14:00:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 14:00:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 14:00:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:00:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:00:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 14:00:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 14:00:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 14:00:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 14:00:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 14:00:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:00:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:00:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:00:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:00:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:00:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:00:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:00:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:00:13,603 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:00:13,604 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 14:00:13,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:00:13 BoogieIcfgContainer [2020-10-29 14:00:13,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:00:13,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:00:13,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:00:13,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:00:13,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:00:10" (1/3) ... [2020-10-29 14:00:13,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7109d1d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:00:13, skipping insertion in model container [2020-10-29 14:00:13,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:00:11" (2/3) ... [2020-10-29 14:00:13,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7109d1d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:00:13, skipping insertion in model container [2020-10-29 14:00:13,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:00:13" (3/3) ... [2020-10-29 14:00:13,618 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-29 14:00:13,631 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:00:13,636 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:00:13,651 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:00:13,683 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:00:13,684 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:00:13,684 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:00:13,684 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:00:13,684 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:00:13,684 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:00:13,684 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:00:13,685 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:00:13,713 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-29 14:00:13,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-29 14:00:13,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:13,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:00:13,734 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:13,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:13,741 INFO L82 PathProgramCache]: Analyzing trace with hash 405680926, now seen corresponding path program 1 times [2020-10-29 14:00:13,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:13,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285324245] [2020-10-29 14:00:13,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:14,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:14,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:15,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:15,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:15,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:15,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:15,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:15,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:15,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:16,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:17,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:18,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:19,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:19,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 14:00:19,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:00:19,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 14:00:19,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:19,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:19,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:00:19,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 14:00:19,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 14:00:19,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 14:00:19,777 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:00:19,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:19,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:19,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:19,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:19,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:19,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 14:00:19,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:19,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:19,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:19,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:19,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285324245] [2020-10-29 14:00:19,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:19,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:00:19,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152069733] [2020-10-29 14:00:19,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:00:19,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:19,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:00:19,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:00:19,946 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 4 states. [2020-10-29 14:00:20,445 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-29 14:00:23,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:23,590 INFO L93 Difference]: Finished difference Result 739 states and 1302 transitions. [2020-10-29 14:00:23,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:00:23,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-29 14:00:23,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:23,613 INFO L225 Difference]: With dead ends: 739 [2020-10-29 14:00:23,614 INFO L226 Difference]: Without dead ends: 571 [2020-10-29 14:00:23,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:23,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-10-29 14:00:23,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 568. [2020-10-29 14:00:23,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2020-10-29 14:00:23,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 835 transitions. [2020-10-29 14:00:23,721 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 835 transitions. Word has length 150 [2020-10-29 14:00:23,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:23,722 INFO L481 AbstractCegarLoop]: Abstraction has 568 states and 835 transitions. [2020-10-29 14:00:23,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:00:23,722 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 835 transitions. [2020-10-29 14:00:23,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-29 14:00:23,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:23,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:00:23,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:00:23,729 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:23,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:23,730 INFO L82 PathProgramCache]: Analyzing trace with hash -675213440, now seen corresponding path program 1 times [2020-10-29 14:00:23,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:23,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254410508] [2020-10-29 14:00:23,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:23,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:23,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:24,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:24,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:24,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:24,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:24,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:24,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:24,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:25,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:25,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:26,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:26,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:28,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:28,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 14:00:28,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:00:28,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 14:00:28,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:28,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:28,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:00:28,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 14:00:28,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 14:00:28,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:00:29,396 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:00:29,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:29,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:29,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:29,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:29,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:29,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 14:00:29,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:29,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:29,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:29,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:29,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:29,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:29,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254410508] [2020-10-29 14:00:29,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:29,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:00:29,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458503246] [2020-10-29 14:00:29,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:00:29,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:29,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:00:29,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:00:29,522 INFO L87 Difference]: Start difference. First operand 568 states and 835 transitions. Second operand 4 states. [2020-10-29 14:00:29,959 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-29 14:00:32,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:32,496 INFO L93 Difference]: Finished difference Result 1144 states and 1734 transitions. [2020-10-29 14:00:32,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:00:32,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-29 14:00:32,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:32,512 INFO L225 Difference]: With dead ends: 1144 [2020-10-29 14:00:32,512 INFO L226 Difference]: Without dead ends: 931 [2020-10-29 14:00:32,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:32,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2020-10-29 14:00:32,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 928. [2020-10-29 14:00:32,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 928 states. [2020-10-29 14:00:32,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1385 transitions. [2020-10-29 14:00:32,629 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1385 transitions. Word has length 150 [2020-10-29 14:00:32,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:32,631 INFO L481 AbstractCegarLoop]: Abstraction has 928 states and 1385 transitions. [2020-10-29 14:00:32,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:00:32,631 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1385 transitions. [2020-10-29 14:00:32,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-29 14:00:32,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:32,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:00:32,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:00:32,641 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:32,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:32,643 INFO L82 PathProgramCache]: Analyzing trace with hash -685710505, now seen corresponding path program 1 times [2020-10-29 14:00:32,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:32,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000619884] [2020-10-29 14:00:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:32,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:32,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:33,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:33,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:33,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:33,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:33,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:33,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:33,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:34,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:34,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:36,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:36,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:37,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:37,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 14:00:37,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:00:37,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 14:00:37,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:37,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:37,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:37,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:37,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 14:00:37,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:00:38,364 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:00:38,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:38,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:38,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:38,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:38,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:38,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 14:00:38,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:38,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:38,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:38,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:38,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000619884] [2020-10-29 14:00:38,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:38,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:38,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664899451] [2020-10-29 14:00:38,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:38,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:38,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:38,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:38,478 INFO L87 Difference]: Start difference. First operand 928 states and 1385 transitions. Second operand 5 states. [2020-10-29 14:00:41,293 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 14:00:42,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:42,229 INFO L93 Difference]: Finished difference Result 2689 states and 4000 transitions. [2020-10-29 14:00:42,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:00:42,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-29 14:00:42,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:42,242 INFO L225 Difference]: With dead ends: 2689 [2020-10-29 14:00:42,242 INFO L226 Difference]: Without dead ends: 1782 [2020-10-29 14:00:42,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:00:42,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2020-10-29 14:00:42,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1745. [2020-10-29 14:00:42,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1745 states. [2020-10-29 14:00:42,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2583 transitions. [2020-10-29 14:00:42,375 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2583 transitions. Word has length 150 [2020-10-29 14:00:42,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:42,376 INFO L481 AbstractCegarLoop]: Abstraction has 1745 states and 2583 transitions. [2020-10-29 14:00:42,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:42,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2583 transitions. [2020-10-29 14:00:42,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-29 14:00:42,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:42,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:00:42,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:00:42,386 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:42,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:42,387 INFO L82 PathProgramCache]: Analyzing trace with hash -2147183710, now seen corresponding path program 1 times [2020-10-29 14:00:42,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:42,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612152035] [2020-10-29 14:00:42,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:42,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:42,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:42,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:43,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:43,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:43,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:43,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:43,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:43,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:44,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:45,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:45,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:47,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:47,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 14:00:47,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:00:47,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 14:00:47,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:47,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 14:00:47,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:48,119 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:00:48,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:48,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:48,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:48,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:48,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:48,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:00:48,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:48,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:48,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:48,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:48,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612152035] [2020-10-29 14:00:48,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:48,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:48,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409174152] [2020-10-29 14:00:48,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:48,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:48,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:48,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:48,226 INFO L87 Difference]: Start difference. First operand 1745 states and 2583 transitions. Second operand 5 states. [2020-10-29 14:00:50,928 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 14:00:52,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:52,357 INFO L93 Difference]: Finished difference Result 5078 states and 7492 transitions. [2020-10-29 14:00:52,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:00:52,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-29 14:00:52,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:52,379 INFO L225 Difference]: With dead ends: 5078 [2020-10-29 14:00:52,380 INFO L226 Difference]: Without dead ends: 3365 [2020-10-29 14:00:52,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:00:52,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3365 states. [2020-10-29 14:00:52,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3365 to 3328. [2020-10-29 14:00:52,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3328 states. [2020-10-29 14:00:52,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3328 states to 3328 states and 4872 transitions. [2020-10-29 14:00:52,565 INFO L78 Accepts]: Start accepts. Automaton has 3328 states and 4872 transitions. Word has length 151 [2020-10-29 14:00:52,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:52,565 INFO L481 AbstractCegarLoop]: Abstraction has 3328 states and 4872 transitions. [2020-10-29 14:00:52,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:52,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3328 states and 4872 transitions. [2020-10-29 14:00:52,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-29 14:00:52,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:52,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:00:52,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:00:52,572 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:52,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:52,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1890349830, now seen corresponding path program 1 times [2020-10-29 14:00:52,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:52,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603292120] [2020-10-29 14:00:52,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:52,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:52,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:52,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:52,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:52,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:52,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:53,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:53,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:53,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:54,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:54,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:56,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:57,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:57,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:57,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 14:00:57,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:00:57,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 14:00:57,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:57,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:57,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:57,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:57,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 14:00:57,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:58,225 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:00:58,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:58,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:58,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:58,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:58,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:58,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:00:58,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:58,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:58,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:58,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:58,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:58,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:58,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:58,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603292120] [2020-10-29 14:00:58,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:58,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:58,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083068692] [2020-10-29 14:00:58,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:58,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:58,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:58,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:58,325 INFO L87 Difference]: Start difference. First operand 3328 states and 4872 transitions. Second operand 5 states. [2020-10-29 14:01:01,056 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 14:01:01,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:01,988 INFO L93 Difference]: Finished difference Result 9692 states and 14126 transitions. [2020-10-29 14:01:01,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:01:01,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-29 14:01:01,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:02,022 INFO L225 Difference]: With dead ends: 9692 [2020-10-29 14:01:02,023 INFO L226 Difference]: Without dead ends: 6393 [2020-10-29 14:01:02,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:01:02,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6393 states. [2020-10-29 14:01:02,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6393 to 6366. [2020-10-29 14:01:02,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6366 states. [2020-10-29 14:01:02,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6366 states to 6366 states and 9173 transitions. [2020-10-29 14:01:02,387 INFO L78 Accepts]: Start accepts. Automaton has 6366 states and 9173 transitions. Word has length 152 [2020-10-29 14:01:02,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:02,387 INFO L481 AbstractCegarLoop]: Abstraction has 6366 states and 9173 transitions. [2020-10-29 14:01:02,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:01:02,387 INFO L276 IsEmpty]: Start isEmpty. Operand 6366 states and 9173 transitions. [2020-10-29 14:01:02,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-29 14:01:02,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:02,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:01:02,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:01:02,399 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:02,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:02,400 INFO L82 PathProgramCache]: Analyzing trace with hash -708540380, now seen corresponding path program 1 times [2020-10-29 14:01:02,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:02,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676120561] [2020-10-29 14:01:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:02,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:02,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:02,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:02,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:02,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:02,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:03,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:04,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:07,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:07,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-29 14:01:07,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:01:07,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 14:01:07,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:07,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:07,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:01:07,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:01:07,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 14:01:07,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:08,052 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:01:08,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:08,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:08,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:08,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:08,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:08,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 14:01:08,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:08,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:08,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:08,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:08,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:08,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:08,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:08,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676120561] [2020-10-29 14:01:08,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:08,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:01:08,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011156750] [2020-10-29 14:01:08,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:01:08,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:08,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:01:08,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:08,154 INFO L87 Difference]: Start difference. First operand 6366 states and 9173 transitions. Second operand 5 states. [2020-10-29 14:01:11,568 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 14:01:13,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:13,387 INFO L93 Difference]: Finished difference Result 18525 states and 26670 transitions. [2020-10-29 14:01:13,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:01:13,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-29 14:01:13,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:13,470 INFO L225 Difference]: With dead ends: 18525 [2020-10-29 14:01:13,472 INFO L226 Difference]: Without dead ends: 12428 [2020-10-29 14:01:13,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:01:13,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12428 states. [2020-10-29 14:01:14,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12428 to 12383. [2020-10-29 14:01:14,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12383 states. [2020-10-29 14:01:14,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12383 states to 12383 states and 17652 transitions. [2020-10-29 14:01:14,273 INFO L78 Accepts]: Start accepts. Automaton has 12383 states and 17652 transitions. Word has length 153 [2020-10-29 14:01:14,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:14,273 INFO L481 AbstractCegarLoop]: Abstraction has 12383 states and 17652 transitions. [2020-10-29 14:01:14,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:01:14,273 INFO L276 IsEmpty]: Start isEmpty. Operand 12383 states and 17652 transitions. [2020-10-29 14:01:14,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 14:01:14,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:14,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:01:14,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:01:14,292 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:14,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:14,293 INFO L82 PathProgramCache]: Analyzing trace with hash -353126533, now seen corresponding path program 1 times [2020-10-29 14:01:14,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:14,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51582051] [2020-10-29 14:01:14,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:14,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:14,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:14,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:14,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:14,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:14,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:15,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:18,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:18,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:19,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:19,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 14:01:19,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:01:19,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 14:01:19,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:19,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:19,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:01:19,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:01:19,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 14:01:19,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:19,816 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:01:19,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:19,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:19,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:19,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:19,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:19,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 14:01:19,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:19,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:19,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:19,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:19,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:01:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:19,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51582051] [2020-10-29 14:01:19,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:19,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:01:19,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833530360] [2020-10-29 14:01:19,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:01:19,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:19,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:01:19,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:19,933 INFO L87 Difference]: Start difference. First operand 12383 states and 17652 transitions. Second operand 5 states. [2020-10-29 14:01:23,324 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 14:01:25,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:25,485 INFO L93 Difference]: Finished difference Result 32407 states and 46140 transitions. [2020-10-29 14:01:25,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:01:25,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-29 14:01:25,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:25,532 INFO L225 Difference]: With dead ends: 32407 [2020-10-29 14:01:25,532 INFO L226 Difference]: Without dead ends: 21226 [2020-10-29 14:01:25,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:01:25,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21226 states. [2020-10-29 14:01:26,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21226 to 21181. [2020-10-29 14:01:26,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21181 states. [2020-10-29 14:01:26,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21181 states to 21181 states and 29650 transitions. [2020-10-29 14:01:26,728 INFO L78 Accepts]: Start accepts. Automaton has 21181 states and 29650 transitions. Word has length 154 [2020-10-29 14:01:26,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:26,728 INFO L481 AbstractCegarLoop]: Abstraction has 21181 states and 29650 transitions. [2020-10-29 14:01:26,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:01:26,728 INFO L276 IsEmpty]: Start isEmpty. Operand 21181 states and 29650 transitions. [2020-10-29 14:01:26,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-29 14:01:26,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:26,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:01:26,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:01:26,759 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:26,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:26,759 INFO L82 PathProgramCache]: Analyzing trace with hash -792188126, now seen corresponding path program 1 times [2020-10-29 14:01:26,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:26,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458613063] [2020-10-29 14:01:26,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:26,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:26,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:26,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:26,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:27,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:27,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:31,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:31,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 14:01:31,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:01:31,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-29 14:01:31,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:31,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:01:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:01:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 14:01:31,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:32,331 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:01:32,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:32,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:32,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:32,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:32,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:32,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:01:32,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:32,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:32,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:32,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:32,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458613063] [2020-10-29 14:01:32,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:32,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:01:32,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9148538] [2020-10-29 14:01:32,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:01:32,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:32,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:01:32,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:32,383 INFO L87 Difference]: Start difference. First operand 21181 states and 29650 transitions. Second operand 5 states. [2020-10-29 14:01:35,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:35,283 INFO L93 Difference]: Finished difference Result 37310 states and 52190 transitions. [2020-10-29 14:01:35,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:01:35,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-29 14:01:35,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:35,316 INFO L225 Difference]: With dead ends: 37310 [2020-10-29 14:01:35,316 INFO L226 Difference]: Without dead ends: 16218 [2020-10-29 14:01:35,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:01:35,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16218 states. [2020-10-29 14:01:36,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16218 to 16218. [2020-10-29 14:01:36,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16218 states. [2020-10-29 14:01:36,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16218 states to 16218 states and 22660 transitions. [2020-10-29 14:01:36,093 INFO L78 Accepts]: Start accepts. Automaton has 16218 states and 22660 transitions. Word has length 155 [2020-10-29 14:01:36,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:36,093 INFO L481 AbstractCegarLoop]: Abstraction has 16218 states and 22660 transitions. [2020-10-29 14:01:36,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:01:36,093 INFO L276 IsEmpty]: Start isEmpty. Operand 16218 states and 22660 transitions. [2020-10-29 14:01:36,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-29 14:01:36,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:36,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:01:36,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:01:36,112 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:36,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:36,112 INFO L82 PathProgramCache]: Analyzing trace with hash 497072343, now seen corresponding path program 1 times [2020-10-29 14:01:36,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:36,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566905320] [2020-10-29 14:01:36,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:36,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:36,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:36,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:36,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:36,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:36,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:36,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:38,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:41,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:41,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-29 14:01:41,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:01:41,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:01:41,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:41,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:01:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:01:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 14:01:41,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:41,695 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:01:41,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:41,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:41,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:41,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:41,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:41,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:01:41,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:41,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:41,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:41,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:41,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:41,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566905320] [2020-10-29 14:01:41,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:41,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:01:41,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271196888] [2020-10-29 14:01:41,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:01:41,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:41,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:01:41,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:41,758 INFO L87 Difference]: Start difference. First operand 16218 states and 22660 transitions. Second operand 5 states. [2020-10-29 14:01:45,026 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 14:01:47,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:47,203 INFO L93 Difference]: Finished difference Result 39446 states and 55076 transitions. [2020-10-29 14:01:47,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:01:47,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-29 14:01:47,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:47,250 INFO L225 Difference]: With dead ends: 39446 [2020-10-29 14:01:47,250 INFO L226 Difference]: Without dead ends: 24205 [2020-10-29 14:01:47,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:01:47,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24205 states. [2020-10-29 14:01:48,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24205 to 24173. [2020-10-29 14:01:48,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24173 states. [2020-10-29 14:01:48,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24173 states to 24173 states and 33175 transitions. [2020-10-29 14:01:48,808 INFO L78 Accepts]: Start accepts. Automaton has 24173 states and 33175 transitions. Word has length 157 [2020-10-29 14:01:48,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:48,809 INFO L481 AbstractCegarLoop]: Abstraction has 24173 states and 33175 transitions. [2020-10-29 14:01:48,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:01:48,809 INFO L276 IsEmpty]: Start isEmpty. Operand 24173 states and 33175 transitions. [2020-10-29 14:01:48,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-29 14:01:48,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:48,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:01:48,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:01:48,829 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:48,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:48,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1618773107, now seen corresponding path program 1 times [2020-10-29 14:01:48,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:48,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455572805] [2020-10-29 14:01:48,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:48,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:48,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:48,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:48,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:49,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:49,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:49,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:49,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:49,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:53,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:53,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 14:01:53,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:01:53,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 14:01:53,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:53,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:53,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:01:53,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:01:53,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 14:01:53,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:54,461 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:01:54,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:54,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:54,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:54,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:54,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:54,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 14:01:54,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:54,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:54,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:01:54,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:54,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:01:54,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:54,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:54,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455572805] [2020-10-29 14:01:54,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:54,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:01:54,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042310254] [2020-10-29 14:01:54,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:01:54,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:54,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:01:54,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:01:54,577 INFO L87 Difference]: Start difference. First operand 24173 states and 33175 transitions. Second operand 9 states. [2020-10-29 14:01:55,131 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 14:01:58,312 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2020-10-29 14:01:58,896 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2020-10-29 14:02:01,408 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2020-10-29 14:02:01,950 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2020-10-29 14:02:04,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:04,781 INFO L93 Difference]: Finished difference Result 86897 states and 124772 transitions. [2020-10-29 14:02:04,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 14:02:04,782 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 158 [2020-10-29 14:02:04,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:05,084 INFO L225 Difference]: With dead ends: 86897 [2020-10-29 14:02:05,085 INFO L226 Difference]: Without dead ends: 65591 [2020-10-29 14:02:05,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-29 14:02:05,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65591 states. [2020-10-29 14:02:07,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65591 to 34685. [2020-10-29 14:02:07,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34685 states. [2020-10-29 14:02:08,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34685 states to 34685 states and 48085 transitions. [2020-10-29 14:02:08,014 INFO L78 Accepts]: Start accepts. Automaton has 34685 states and 48085 transitions. Word has length 158 [2020-10-29 14:02:08,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:08,015 INFO L481 AbstractCegarLoop]: Abstraction has 34685 states and 48085 transitions. [2020-10-29 14:02:08,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:02:08,015 INFO L276 IsEmpty]: Start isEmpty. Operand 34685 states and 48085 transitions. [2020-10-29 14:02:08,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-29 14:02:08,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:08,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:08,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:02:08,036 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:08,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:08,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1767959702, now seen corresponding path program 1 times [2020-10-29 14:02:08,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:08,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768458142] [2020-10-29 14:02:08,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:08,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:08,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:08,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:08,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:08,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:08,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:08,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:10,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:10,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:13,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:13,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 14:02:13,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:02:13,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 14:02:13,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:13,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:02:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 14:02:13,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:13,591 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:02:13,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:13,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:13,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:13,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:13,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:13,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:02:13,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:13,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:13,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:13,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:13,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:13,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:13,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:13,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768458142] [2020-10-29 14:02:13,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:13,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:13,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901518273] [2020-10-29 14:02:13,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:13,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:13,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:13,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:13,662 INFO L87 Difference]: Start difference. First operand 34685 states and 48085 transitions. Second operand 5 states. [2020-10-29 14:02:14,175 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-29 14:02:20,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:20,497 INFO L93 Difference]: Finished difference Result 63960 states and 88768 transitions. [2020-10-29 14:02:20,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:02:20,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-29 14:02:20,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:20,545 INFO L225 Difference]: With dead ends: 63960 [2020-10-29 14:02:20,545 INFO L226 Difference]: Without dead ends: 34690 [2020-10-29 14:02:20,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:02:20,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34690 states. [2020-10-29 14:02:23,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34690 to 34645. [2020-10-29 14:02:23,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34645 states. [2020-10-29 14:02:23,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34645 states to 34645 states and 47924 transitions. [2020-10-29 14:02:23,346 INFO L78 Accepts]: Start accepts. Automaton has 34645 states and 47924 transitions. Word has length 158 [2020-10-29 14:02:23,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:23,347 INFO L481 AbstractCegarLoop]: Abstraction has 34645 states and 47924 transitions. [2020-10-29 14:02:23,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:02:23,347 INFO L276 IsEmpty]: Start isEmpty. Operand 34645 states and 47924 transitions. [2020-10-29 14:02:23,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-29 14:02:23,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:23,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:23,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:02:23,366 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:23,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:23,367 INFO L82 PathProgramCache]: Analyzing trace with hash 617261270, now seen corresponding path program 1 times [2020-10-29 14:02:23,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:23,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667294276] [2020-10-29 14:02:23,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:23,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:23,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:23,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:23,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:23,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:23,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:28,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:28,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 14:02:28,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:02:28,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 14:02:28,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:28,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:28,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:28,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 14:02:28,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 14:02:28,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:28,932 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:02:28,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:28,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:28,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:28,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:28,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:28,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:02:28,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:28,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:28,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:28,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:28,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:28,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:28,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:28,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667294276] [2020-10-29 14:02:28,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:28,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:28,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360703790] [2020-10-29 14:02:28,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:28,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:28,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:28,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:28,993 INFO L87 Difference]: Start difference. First operand 34645 states and 47924 transitions. Second operand 5 states. [2020-10-29 14:02:33,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:33,151 INFO L93 Difference]: Finished difference Result 64712 states and 89744 transitions. [2020-10-29 14:02:33,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:02:33,152 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-29 14:02:33,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:33,191 INFO L225 Difference]: With dead ends: 64712 [2020-10-29 14:02:33,191 INFO L226 Difference]: Without dead ends: 30665 [2020-10-29 14:02:33,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:02:33,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30665 states. [2020-10-29 14:02:35,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30665 to 30665. [2020-10-29 14:02:35,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30665 states. [2020-10-29 14:02:35,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30665 states to 30665 states and 42474 transitions. [2020-10-29 14:02:35,702 INFO L78 Accepts]: Start accepts. Automaton has 30665 states and 42474 transitions. Word has length 159 [2020-10-29 14:02:35,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:35,702 INFO L481 AbstractCegarLoop]: Abstraction has 30665 states and 42474 transitions. [2020-10-29 14:02:35,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:02:35,703 INFO L276 IsEmpty]: Start isEmpty. Operand 30665 states and 42474 transitions. [2020-10-29 14:02:35,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 14:02:35,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:35,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:35,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 14:02:35,725 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:35,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:35,726 INFO L82 PathProgramCache]: Analyzing trace with hash -2064356520, now seen corresponding path program 1 times [2020-10-29 14:02:35,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:35,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348864376] [2020-10-29 14:02:35,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:35,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:35,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:35,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:35,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:35,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:39,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:40,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:40,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 14:02:40,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:02:40,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 14:02:40,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:40,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:40,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:40,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 14:02:40,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 14:02:40,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:41,275 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:02:41,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:41,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:41,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:41,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:41,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:41,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:02:41,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:41,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:41,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:41,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:41,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:41,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:41,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:41,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348864376] [2020-10-29 14:02:41,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:41,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:41,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811586230] [2020-10-29 14:02:41,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:41,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:41,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:41,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:41,325 INFO L87 Difference]: Start difference. First operand 30665 states and 42474 transitions. Second operand 5 states. [2020-10-29 14:02:45,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:45,173 INFO L93 Difference]: Finished difference Result 53558 states and 74266 transitions. [2020-10-29 14:02:45,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:02:45,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-29 14:02:45,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:45,197 INFO L225 Difference]: With dead ends: 53558 [2020-10-29 14:02:45,197 INFO L226 Difference]: Without dead ends: 23364 [2020-10-29 14:02:45,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:02:45,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23364 states. [2020-10-29 14:02:46,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23364 to 23364. [2020-10-29 14:02:46,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23364 states. [2020-10-29 14:02:47,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23364 states to 23364 states and 32330 transitions. [2020-10-29 14:02:47,019 INFO L78 Accepts]: Start accepts. Automaton has 23364 states and 32330 transitions. Word has length 160 [2020-10-29 14:02:47,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:47,019 INFO L481 AbstractCegarLoop]: Abstraction has 23364 states and 32330 transitions. [2020-10-29 14:02:47,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:02:47,020 INFO L276 IsEmpty]: Start isEmpty. Operand 23364 states and 32330 transitions. [2020-10-29 14:02:47,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-29 14:02:47,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:47,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:47,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 14:02:47,037 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:47,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:47,037 INFO L82 PathProgramCache]: Analyzing trace with hash -545320600, now seen corresponding path program 1 times [2020-10-29 14:02:47,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:47,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228964834] [2020-10-29 14:02:47,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:47,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:47,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:47,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:47,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:48,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:51,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:51,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 14:02:51,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:02:51,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4352 [2020-10-29 14:02:51,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:51,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:51,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:02:51,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-29 14:02:51,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 14:02:51,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:51,908 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:02:51,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:51,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:51,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:51,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:51,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:51,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 14:02:51,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:51,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:51,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:51,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:51,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:51,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:51,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228964834] [2020-10-29 14:02:51,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:51,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:02:51,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115532608] [2020-10-29 14:02:51,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:02:51,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:51,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:02:51,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:02:51,977 INFO L87 Difference]: Start difference. First operand 23364 states and 32330 transitions. Second operand 4 states. [2020-10-29 14:02:56,342 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-29 14:02:58,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:58,027 INFO L93 Difference]: Finished difference Result 59755 states and 84267 transitions. [2020-10-29 14:02:58,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:02:58,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2020-10-29 14:02:58,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:58,070 INFO L225 Difference]: With dead ends: 59755 [2020-10-29 14:02:58,070 INFO L226 Difference]: Without dead ends: 37859 [2020-10-29 14:02:58,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:58,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37859 states. [2020-10-29 14:03:01,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37859 to 33840. [2020-10-29 14:03:01,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33840 states. [2020-10-29 14:03:01,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33840 states to 33840 states and 48367 transitions. [2020-10-29 14:03:01,152 INFO L78 Accepts]: Start accepts. Automaton has 33840 states and 48367 transitions. Word has length 164 [2020-10-29 14:03:01,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:01,152 INFO L481 AbstractCegarLoop]: Abstraction has 33840 states and 48367 transitions. [2020-10-29 14:03:01,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:03:01,152 INFO L276 IsEmpty]: Start isEmpty. Operand 33840 states and 48367 transitions. [2020-10-29 14:03:01,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-29 14:03:01,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:01,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:01,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 14:03:01,164 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:01,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:01,164 INFO L82 PathProgramCache]: Analyzing trace with hash 396836452, now seen corresponding path program 1 times [2020-10-29 14:03:01,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:01,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445340935] [2020-10-29 14:03:01,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:01,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:01,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:01,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:01,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:03,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:03,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-29 14:03:03,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 14:03:03,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1896 [2020-10-29 14:03:03,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:03,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:03,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:03,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 14:03:03,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 14:03:03,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:03,708 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:03:03,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:03,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:03,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:03,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:03,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:03,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:03:03,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:03,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:03,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:03,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:03,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:03,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:03,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:03,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445340935] [2020-10-29 14:03:03,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:03,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:03,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679115884] [2020-10-29 14:03:03,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:03,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:03,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:03,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:03,754 INFO L87 Difference]: Start difference. First operand 33840 states and 48367 transitions. Second operand 5 states. [2020-10-29 14:03:07,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:07,959 INFO L93 Difference]: Finished difference Result 56693 states and 81369 transitions. [2020-10-29 14:03:07,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:03:07,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-29 14:03:07,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:07,999 INFO L225 Difference]: With dead ends: 56693 [2020-10-29 14:03:07,999 INFO L226 Difference]: Without dead ends: 28848 [2020-10-29 14:03:08,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:03:08,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28848 states. [2020-10-29 14:03:10,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28848 to 28845. [2020-10-29 14:03:10,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28845 states. [2020-10-29 14:03:10,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28845 states to 28845 states and 41163 transitions. [2020-10-29 14:03:10,591 INFO L78 Accepts]: Start accepts. Automaton has 28845 states and 41163 transitions. Word has length 167 [2020-10-29 14:03:10,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:10,591 INFO L481 AbstractCegarLoop]: Abstraction has 28845 states and 41163 transitions. [2020-10-29 14:03:10,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:10,591 INFO L276 IsEmpty]: Start isEmpty. Operand 28845 states and 41163 transitions. [2020-10-29 14:03:10,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-29 14:03:10,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:10,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:10,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 14:03:10,601 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:10,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:10,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1804181248, now seen corresponding path program 1 times [2020-10-29 14:03:10,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:10,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854765288] [2020-10-29 14:03:10,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:10,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:10,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:11,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:11,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 14:03:11,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:03:11,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-10-29 14:03:11,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:11,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:11,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:03:11,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-29 14:03:11,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 14:03:11,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:11,658 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:03:11,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:11,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:11,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:11,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:11,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:11,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:03:11,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:11,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:11,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:11,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:11,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:11,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:11,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:11,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854765288] [2020-10-29 14:03:11,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:11,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:03:11,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7132087] [2020-10-29 14:03:11,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:03:11,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:11,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:03:11,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:03:11,729 INFO L87 Difference]: Start difference. First operand 28845 states and 41163 transitions. Second operand 4 states. [2020-10-29 14:03:16,446 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-29 14:03:19,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:19,583 INFO L93 Difference]: Finished difference Result 76022 states and 110182 transitions. [2020-10-29 14:03:19,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:03:19,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-10-29 14:03:19,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:19,652 INFO L225 Difference]: With dead ends: 76022 [2020-10-29 14:03:19,652 INFO L226 Difference]: Without dead ends: 48818 [2020-10-29 14:03:19,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:19,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48818 states. [2020-10-29 14:03:23,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48818 to 45133. [2020-10-29 14:03:23,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45133 states. [2020-10-29 14:03:23,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45133 states to 45133 states and 65795 transitions. [2020-10-29 14:03:23,897 INFO L78 Accepts]: Start accepts. Automaton has 45133 states and 65795 transitions. Word has length 170 [2020-10-29 14:03:23,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:23,897 INFO L481 AbstractCegarLoop]: Abstraction has 45133 states and 65795 transitions. [2020-10-29 14:03:23,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:03:23,897 INFO L276 IsEmpty]: Start isEmpty. Operand 45133 states and 65795 transitions. [2020-10-29 14:03:23,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-29 14:03:23,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:23,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:23,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 14:03:23,905 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:23,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:23,906 INFO L82 PathProgramCache]: Analyzing trace with hash 748501203, now seen corresponding path program 1 times [2020-10-29 14:03:23,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:23,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580864944] [2020-10-29 14:03:23,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:23,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:24,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:24,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-29 14:03:24,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:24,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-10-29 14:03:24,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:24,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:24,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:03:24,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 14:03:24,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:03:24,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:24,860 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:03:24,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:24,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:24,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:24,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:24,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:24,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:03:24,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:24,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:24,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:24,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:24,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580864944] [2020-10-29 14:03:24,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:24,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:03:24,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304906624] [2020-10-29 14:03:24,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:03:24,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:24,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:03:24,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:03:24,914 INFO L87 Difference]: Start difference. First operand 45133 states and 65795 transitions. Second operand 4 states. [2020-10-29 14:03:29,403 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-29 14:03:33,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:33,434 INFO L93 Difference]: Finished difference Result 103909 states and 153427 transitions. [2020-10-29 14:03:33,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:03:33,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-10-29 14:03:33,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:33,528 INFO L225 Difference]: With dead ends: 103909 [2020-10-29 14:03:33,528 INFO L226 Difference]: Without dead ends: 59964 [2020-10-29 14:03:33,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:33,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59964 states. [2020-10-29 14:03:39,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59964 to 58681. [2020-10-29 14:03:39,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58681 states. [2020-10-29 14:03:39,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58681 states to 58681 states and 86335 transitions. [2020-10-29 14:03:39,450 INFO L78 Accepts]: Start accepts. Automaton has 58681 states and 86335 transitions. Word has length 173 [2020-10-29 14:03:39,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:39,450 INFO L481 AbstractCegarLoop]: Abstraction has 58681 states and 86335 transitions. [2020-10-29 14:03:39,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:03:39,450 INFO L276 IsEmpty]: Start isEmpty. Operand 58681 states and 86335 transitions. [2020-10-29 14:03:39,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-29 14:03:39,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:39,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:39,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 14:03:39,458 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:39,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:39,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1308249958, now seen corresponding path program 1 times [2020-10-29 14:03:39,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:39,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553930752] [2020-10-29 14:03:39,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:39,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:40,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:40,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:41,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking...